matt nile.jpeg

Matt Nile

With significant executive and consulting experience across Australia and the UK, Matt brings transformational change, business improvement, project, risk management, governance and IT strategy expertise.


Margaret Geraghty

Margaret has over two decades of management consulting and project management expertise internationally, with Andersens, PWC and Deloitte.



Founded in 2013 by Simon Haigh, GCM Advisory is a global consultancy, located in Dublin (Ireland), London (UK) and Perth (Western Australia)


  • Start Up

  • Early Stage Growth

  • Exit Strategy

  • Brand Valuation with Brand Finance


  • Program & Change Management

  • Business Process Improvement


  • Business Development

  • Negotiation

  • Sales

  • Deal Closing Programs


  • Marshall Goldsmith Leadership Coaching

  • Mentoring

  • Training Programs

  • Workshops

Simon Haigh

Why do organisations and individuals engage me?

I have been there through successful and tough times and driven through with deeper knowledge and a strong awareness of resilience, purpose and high-performance mindset capabilities. I now pass on these capabilities to others. I help unlock, build, sustain sustainable growth mindsets and awareness of potential and resilience within. 


I am a 5-star author, former corporate lawyer & multinational CEO, successful entrepreneur, I have sat on 5 boards as non-executive director and have been featured on the BBC. I am a recognized global expert on negotiation, dealmaking, business, leadership, mindset and brand growth.


I help you avoid roadblocks, pitfalls and mistakes to unlock your potential and create transformational change so you can optimise your growth journey, whether Business (transactional, strategic, operational excellence - program, change management and process improvement), Leadership (coaching, mentoring), Brand (strategy and valuation) or Personal (mindset, mindfulness, well-being, goal-setting, life skills and resilience).

I am endorsed by world no. 1 leadership thinker Marshall Goldsmith, Brand Finance, high performing leaders, major companies, business schools, higher education, professional membership organizations and Government bodies for my work in unlocking potential, creating transformational change and facilitating sustainable growth.

I am an in-demand business, leadership, brand & mindset growth strategist as a certified leadership coach, consultant, trainer, lecturer (negotiation and deal-making), mentor, author, speaker and media host. I am a tri-qualified (England & Wales, Australia and Ireland) commercial lawyer who, as an entrepreneur, has built and sold out of a number of technology, luxury items and travel companies. I have been a C-suite (NANA, Dell, BHP, Xilinx, Eneabba Gas) executive and sat on boards (business and homeless, education and media not-for-profits) across different industries, four continents over 28 years.

Please contact me if you would like to learn more about our work across Business, Leadership, Brand and Personal Growth.

Simon Haigh-4007.jpg
Need more details? We're here to assist.

Learn more about our work across Business, Leadership, Brand and Personal Growth.


IES Abroad
MCS Integrated Solutions
Australia's South West
The Law Society
Government of Australia Departemtn of Housing
Ashburton Aboriginal Corporation

© 2022,

All rights reserved. & EDC are part of the GCM Advisory group.

Email: or

Site proudly created by 

newbox tran (1).png